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Littelfuse.com/Pump-Protection
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Three-Phase Pump Protection
Fully Programmable
777-P2 / 777-KW/HP-P2 SERIES INSTALLATION INSTRUCTIONS
Installation Instructions
TYPICAL WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES
PILOT
Table 8: Wiring Configuration for 777-P2 & 777-KW/HP-P2 Based on Motor Full Load Amps
RECOMMENDED FULL LOAD AMPS
OC RANGE
(AMPS)
UC RANGE
(AMPS)
# OF PASSES THROUGH
EACH WINDOW
MULT
(CT RATIO)
2-2.5
2-10
0, 1-9.8
10
10
2.5-3
2.2-11.1
0, 1.1-10.8
9
9
3-3.5
2.5-12.5
0, 1.2-12.2
8
8
3.5-4
2.8-14.3
0, 1.4-14
7
7
4-5
3.3-16.7
0, 1.6-16.3
6
6
5-6
4-20.1
0, 2-19.6
5
5
6-8
5-25.1
0, 2.5-24.5
4
4
8-12
6.6-33.5
0, 3.3-32.6
3
3
12-20
10-50.3
0, 5-49
2
2
20-90
20-100
0, 10-98
1
1
80-110
80-140
0, 40-140
5
100 (100:5)
110-160
120-210
0, 60-210
5
150 (150:5)
160-220
160-280
0, 80-280
5
200 (200:5)
220-320
240-420
0, 120-420
5
300 (300:5)
320-420
320-560
0, 160-560
5
400 (400:5)
400-520
400-700
0, 200-700
5
500 (500:5)
480-600
480-840
0, 240-840
5
600 (600:5)
540-700
560-980
0, 280-980
5
700 (700:5)
560-800
640-992/FFF
0, 320-992/FFF
5
800 (800:5)
LITTELFUSE
RECOMMENDS
USING CTs WITH
TERMINALS TO
SIMPLIFY
INSTALLATION.
12 - 16 AWG
STRANDED
WIRE
Note: All CTs must face the same
direction and all CT secondaries must
be wired identically, i.e. all X1 terminals
enter the main (round) window and
returns to H1 terminal after exiting the
loop conductor window (rectangle).
Every CT secondary must make five
passes through the corresponding main
conductor window on the modell 777.
Every CT secondary must make a single
pass through the corresponding main
conductor window on the LR versions
of the 777 Plus Series
CURRENT TRANSFORMER WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES
Three-Phase Pump Protection
Fully Programmable
